Brush



L. F. EXLEY Sept. 18, 1928.

} BRUSH Filed Dec. 16, 1926 -x I N VE'V TOR 7 Leo FExZqy,

Patented Sept. 18, 1928.

UNETED STAT LEO F. EXLEY, OF JOHNSON CITY, NEW YORK.

BRUSH.

Application filed December 16, 1926 This invention relates to a brush for removing from molds deposits of casting ma terial which may have adhered to the mold during the casting process, and is. designed primarily for use in connection with metal molds employed in the manufacture of rubber shoe heels, but it is to be understood that a brush, in accordance with this invention, can be employed for any purposes for which it is found applicable, and the invention'has for its object to pr0vide,in amanner as hereinafter set forth, a brush for expeditiously and eiliciently removing adhering deposits of cast ing material from a mold to thoroughly clean the latter.

A further object of the invention is tolprovide in a. manner as hereinafter set forth a revoluble brush for thoroughly cleaning the walls of a molding chamber from any deposits of castingmaterial which may have adhered thereto during the castingoperation.

Further objects of the invention are to provide, in a manner as hereinafter set forth, a brush for the purpose referred to, which is simple in its construction and arrangement, strong, durable, compact, revoluble, spring, controlled, thoroughl eflicient in its use, readily assembled, and comparatively inexpensive to manufacture.

With the foregoing and other objects in view the invention consists of thenovel. construction, combination and arrangement of parts as hereinafter more specifically 'de' scribed, and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to Whichfall withinthe scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views K Figure 1 is a longitudinal sectional View of aibrush in accordance withthis invention and illustrating the brush in an inoperative position.

Figure 2 is an elevation of the-brushand showing the same in operative position with respect to a mold for cleaning the same;

Figure 3 is a plan view of the header holder for the cleanin, members or bristles.

Figure t is an end view of one of the groups or tufts of cleanin;a members or bristles.

Figure 5 is a detail, in elevation oflone of i the groups or tuft-s of cleaning members or bristles.

Serial No. 155,814.

ii brush in accordance with this invention, 1); way 0'1. example is illustrated in connectron with a metal mold employed for manufacturing rubber shoe heels and which is indicated at 10 and formed with a pin 10 to provide an opening in the-heel which is employed for the passage of holdfast devices, to secure the heel in position. The deposits of the casting material which have adhered to the wall of a molding cavity or chamber and also to the pin 10 are indicated at 11. The molding cavity or chamber is indicated at 10. In Figure l of the drawing: the brush is illustrated as in aninoperative posi tron, just prior to it performing its function of removing the deposit 11. In Figure 2 of the drawing the brush is shownas in an operative position when employed to thoroughly clean the mold. The brush includes a rotatable shank 1 of any shape or size to conform to requirements of machine,- such as a drill press, lathe, hand drill to which the-brush is to be attached and operated from. By way of example the shank 1 is of tapered contour and cylindrical in cross section.

A brush for the purpose 'set forthand in accordance with this invention includes a shank 1-, which as shown is of tapered contour and cylindrical-incross section, but its Outer terminal portion 1 ofuniform diameter throughout as well as of reduced outer diameter with respect to the remaining portionof the shank; The reduced outer terminal portion lof the shanlr provides a peripheral shoulder 1 and said portion 'l i's provided with peripheral threads 1 The shank 1 from a point-removed from its inner end to its outer end is hollow to providea lengthwise extending chamber-1 which opens at the outer end'of the shank. The closed end of the chamber'1, which provides the inner end wall of the latter, and indicated at 1 constitutes an abutment for one end of a coiled controll ng spring2'for a centering spindle 3, and the latter is provided at a point between its transverse median and inner end with a peripheral boss 3 against which the otherend ofthe spring Q'abuts. The spring: 2 surrounds that portion ofthe spindle '3, between the boss 3 and-the inner end. of said spindle. T he spindle 3 operates in the chamber 1.

The brush further includes a carrier 4 which also forms a bearing for centering the spindle 3. The carrier 4 has its inner portion formed with a centrally arranged socket 4,

.carrier 4 and through said bore 4" extends the spindle 3.

Connected to and extending outwardly from the carrier 4 is .a combined coupling and holder member referred to generally by the reference character 7 and which consists of a cylindrical part 7 of uniform outer diameter, a tapered part 7 which projects from the cylindrical part 7, a shoulder 7" formed on the inner face of the member 7'and positioned at the inner end of the part 7 and internal threads 7 which are formed on the inner face of the part 7 and engage with periph eral threads 4 provided on the carrier 4. The shoulder 7 provides a seat on the inner face of the member 7 interi'nediate the ends thereof.

Arranged within and extended from the member 7, is a brush element referred to generally by the reference character 5 and which includes a cup-shaped head having its bottom provided with a plurality of concentric rows of spaced openings as indicated at 5" and 5'. The head 5 is mounted on the seat formed by the shoulder 7" arranged on the inner face of the member 7. The head 5 is furthermore formed with a centrally arranged opening 5 through which extends the spindle 3.

The brush element further includes a plurality of sets of groups or tufts of cleaning members or bristles carried by the head 5. The number of sets corresponds with the number of circular rows of openings. As each group or tuft of cleaning members or bristles is constructed alike, but one will be described, as the description of one will apply to all the others. The group or tufts will be hereinafter referred to as a tuft and is formed from a plurality of equal length wires 6 arranged in parallelism and of the desired gauge. The wires 6 are bent centrally upon themselves. as at 6. The wires when bent are extended through an opening and have the major portion of their length extend outwardly from the bottom of the head member 5. That portion of the wires positioned inwardly with respect to the bottom of the head 5 is formedin a loop-like manner as indicated at 6". The wires 6 are secured together, at the bent portion thereof by a ring 8 and which also acts as a means to prevent the wires 6 from passing through an opening 5" or 5.

When the brush is in position. for use the holder 7 is screwed up on the carrier'4 and which carries the brush element 5 therewith so that the latter will fit tightly against the carrier 4 and will not slip during the operation of the brush. The rings 8, when the brush element 5 isin the position as stated shifts downwardly within the brush element 5. When the brush element 5 is clamped against the carrier 4 by the adjusting of the holder 7 there is no slipping of the brush element 5 when the brush is rotated. The holder 7 has its lower end engage the bristles 7 and a frictional contact is set up betweenv the bristles and said holder. The brush element 5 is carried upwardly to clamp against the carrier 4 by the shoulder 7 I g The combined holder and coupling me n ber 7, acts as a guide for the brush element, and thetapered part 7 'f of the member 7, presses the tufts towardsthe spindle, 3 and also causes the tufts to rest firmly against the molds during the cleaning operation. The lower end of the spindle 3 is formed with a concavity 13 to receive the pin 10. The smaller end 9 of the part 7' engages the tufts for shifting them in a manner to restfirmly against the spindle 3 and also the work to be cleared. The shank 1, carrier 4,.element 5 and member 7 are moved downwardly on the spindle 3, against the action of the spring-2 and on the downward movement of the holder 7, the brush'element will be moved downwardly or outwardly and beseated in the work to be cleaneQ and when the brush is revolved the adhering casting deposits, will be thoroughly removed I from the mold.

When pressure isreleased upon the shank '1,

the spring 2 will act to elevate the spindle 3 to the position shown in .Figure 'l and which will carry the brush element clearlof the work which has been operated on. -The work referred to is the moldiwhich is to be cleaned fromdeposits of the casting material which have adhered to the mold cavity or other portions of the mold during the casting operation. The spring 2 providesimeans for normally maintaining the tufts-clear of the mold or the work to be cleaned. p

It is thought the many advantages of a brush, in accordance with this inyention for the purpose referred to. can be readily-understood, and although the preferred embodiment of the invention is as illustrated and described, yet it is to be understood.that

changes in the details of construction can be had which will fall within the invention as claimed. 7

What I claim is: v i 1. A brush comprising a rotatable shank, a carrier connected therewith, extending therefrom and bodily rotating therewith, a

scope of the combined coupling and holding member connected to, extended therefrom and bodily rotating with the carrier, said member having a tapered outer part, a brush element supported by said member intermediate the ends thereof and coupled by said tapered part free of the carrier to bodily rotate With the member, a centering spindle slidably mounted in the shank, carrier and element and normally projecting beyond the brush element and a controlling spring within the shank for said spindle.

2. In a brush for the purpose set forth, a brush element including a cup-shaped head formed with spaced concentrically arranged circular rows of spaced openings, a tuft of cleaning members extending through eac opening and having a looped inner end, and a retaining ring at said looped inner end of each tuft and engageable With said head to prevent the withdrawal ofthe tuft.

3. In a brush for the purpose set forth, a rotatable combined holder and coupling member formed of a cylindrical inner part and a tapered outer part, said inner part provided with means for connecting said member to a driving means therefor, said member further provided with a Seat on its inner face at the point of joinder of the tapered part with the cylindrical part, and a brush element mounted on said seat and extended from said tapered part and bodily rotating With said member.

4. A brush constructed in accordance with claim 3, said brush element. including eoncentrically arranged sets of rows of spaced tufts of cleaning members, the outer end of each of said cleaning members being inclined inwardly toward the axis of rotation of the brush by contact therewith of the outer tapered end of the coupling member.

5. A brush for the purpose set forth comprising a carrier having its inner end formed with a socket, a rotatable, hollow shank abutting against the inner end of the carrier and further extending into said socket and threadedly engaging with the wall thereof, said carrier having its periphery intermediate its inner and outer ends formed with peripheral threads, a combined holder and coupling member formed of a cylindrical inner part and a tapered outer part, said inner part threadcdly engaging with the threaded periphery of said carrier and projecting beyond the outer end of the latter, said member further provided with a seat on its inner face at the point. of joinder of the tapered part with the cylindrical part, a brush element mounted on said seat and extended beyond said tapered part and bodily rotating with said member, and a spring controlled spindle slidably extending through said member, carrier and brush element. normally projecting beyond the outer end of the brush element and provided with a collar to engage the face of said socket to arrest the outward movement of the spindle.

in testimony whereof, I aflix my signature hereto.

LEO F. EXLEY. 

